The black on the spark plugs actually doesn't indicate anything if you aren't starting. If the car were running and they were black, then I'd agree. W/o starting though you are simply not getting a complete burn.
Pull the plug wires one by one and have a friend look for spark jumping around from the wireless post when you try to start it. You should have a good spark at each post.
How old are your wires?
Check fuel pressure.
My thought here is that you are missing spark, timing or fuel. The little fuel you saw on the plugs may be misleading. If we have fuel, our engines can run on 3-4 cylinders. They will run poorly, but it'* possible. This makes me hesistant to think only one coil is causing you not to start.
00 Regal GS: All kinds of cool stuff.